Mold for shaping glass articles.



- No. 648.746. Pat ented May r, 1900.

J. u. Housgn.

MOLD FOB HAPlNG GLASS ARTICLES. 7 (A lication filed 591mm, 1.899.)

(No Model.) 2 Sheets-Sheet l.

5 n-uen tea a mum (No Model.)

HOLD FOR SHAPING GLASS ARTICLES.

(Application filed Sept 21, 1899.)

2 Siieets$heet 2.

are

JOSEPH J. uousnmor sTE nEnWL-Ln," oiiIo.

MOLD FGR Si-iAPlNG GLASS ARTlCLgES.

SPECIFICATION forming part of Letters Patent No. 648,746, dated May 1, 1900. Application filed September 21, 1899. Serial No. 731,206. (No modem To (tZZ 'whoin it may concern.-

Be it known that I, JOSEPH J. Horses, a citizen of the United States, residing at Steubenville, in' thecounty of Jefferson and State of Ghio, have invented certain newand useful Improvements in Molds for Shaping Glass Articles; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it. appertains to make and use the same;

, .The invention relates to molds for shaping glass art. 1 s, and is designed with-particular the manufacture of concave-glass p of the invention is to provide a simple; Y characterbyan'eans of. which reflectors may be quickly and perfectly 1no1ded,-provision being made to enable ret'iectorsof differe .t degrees of concavity to be manufactured by the same machine.

To this end the invention consists in certain features of construction and combination of parts, which will be hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a perspective View of the machine, showing the mold-sections open. Fig. 2 is a sectional View through the shelf or table, showing the molds closed and the face-block in its lowermost'position. Fig. 3 is a similar view with the face -blocl in its uppermost position, showing the reflector pressed to shape. Fig. i is a detail perspective view of a completed reflector. Fig. 5 is a longitudinal sectional view.

In the drawings the same reference characters indicate the same parts of the invention.

In the manufacture of glass reflectors it is the custom to blow the bulb in a mold and their, while the bulb is in its plastic state, press it into the shape of a concave disk. This is the type of reflector that I contemplate ng with my machine, which, as herein-- are stated, is designed for quickly making perfect reflectors of different degrees of con cavity.

'1 denotes the work-bench, and '2 the shelf supported by said bench. tigidly secured ble, and inexpensivemold of this to the upper side of the shelf is an annular disk Lhavinga tapering periphery, the greatest circumferenee being at-its upper edge.

5 denotes a'face-bloci; havinga stem 6, that projects through a polygonal orifice? and is pivotally connected to a lever 8, fulcrumed upon the post 9. To the f ree' end of this lever 8 is pivotallyconnected a push-bar 10, which extends upward throu'gh a'hole in the table in engagement with the treadleplate 11.

12 denotes a retracting-spring. :It is evident that by the depression of the treadle plate the face-block will be elevated.

13 denotes the mold-sections, the interior wall of which, near its lower end, is provided with grooves 14110 correspond to the periphery of the annular disk'with which they e11- gage. This novel engagement of the moldsections with the disk prevents said sections being raised upward out of place in the operation of the machine.

The stemof the face-block is provided on the underside of the shelf with a stop-pin 15,- vertically adjustable'in a row of apertures 16 in the stem to bury the upward throw or movement of the face-block, and thereby control or regulate the degree of concavity to be given to the reflector.

In operation the blowpipe after haviln been charged with a suflicient amount of glass is inserted through the hole in the mold sections; and the operator then blows the glass into the form of a sphere to fill the in terior of the molds. This having been done, the treadle-plate is depressed, thus causing the face-block to be elevated into contact with the glass sphere and force it up against the interior of the walls of the molds, thus imparting to it the shape shown in Figs. 4 and After the reflector is allowed to cool the.

mold-sections are then swung apart and the reflector removed, and may then be coated with quicksilver or any other agent used for the purpose.

' It will of course be understood that various changes in the form, proportion and the minor details of construction may he resorted to without departing from the principle or sacrilicing any of the ad vantages of this invention.

i on

Having thus described the invention, What is claimed, and desired to be secured by'Letters Patent, isv The combination with a suitable support;

of a mold seated thereon and comprising a base-section and two side sections, said side sections having an interlocking connection with the base section, which latter section is provided with a central aperture, a faceblock located within the side sections and seated upon the. base-section and providedivith a bar that projects through the central aperture in the base-section and is formed with a vertical row of apertures, a limit-pin to engage one of said apertures, a vertically- I disposed operating-rod, a treadlc for depressing said rod, and a lever pivoted intermediate its ends to a fixed support and having its ends pivoted to said operating-rod and said bar, substantiaiiy as and for the purpose set 20.

forth.

I In testimony whereof I have hereuntose't' my hand in presence of two subscribing witnesses,

- Witnesses Y W; A. WARDEN, II. A. ALBAN.

.JOSEPII Jfnonsn'n. 

